Once, many years ago, there came an anthropologist to study a distant mountain village. They were an oddly nervous, twitchy people. If a twig snapped, they would throw themselves to the ground. At night, they went through elaborate rituals of barricading their doors, even though, to the anthropologist's marvel, theft and interpersonal violence was virtually unheard of among them. The anthropologist did not speak the language very well, in particular because in these villagers' dialect temporal clauses were especially odd. But he could get out of them that the reason for these customs was that in the distant past, the village had been plagued with man-eating tigers.
The anthropologist, being a compassionate man, thought long and hard about how he could help these people, make them less timid, since it was clear their customs came with a lot of stress and anguish, as well as ostracism of those deemed to be sloppy in maintaining the old anti-tiger customs. But before he could...
You see where this is going, right?
He was eaten by a tiger.
The lesson I want to suggest by this parable: people aren't stupid. They don't adopt harmful behaviours without some sort of reason. A situation that made the behavior make sense.
If the situation persists for a long time, it may stick to culture, and maybe hang around for a while even after the situation has gone.
If the situation persists for a really long time, maybe the behaviour even sticks to biology.
But that doesn't matter. The first step must still be to consider the present situation. Make sure the tigers are not still around.